Improvement in stopping mechanisms for spinning-jacks



F. H. caucus.

Stopping-Mechanism for Spinning-Jacks.

PatentedJunel5J8Z5.

UNITED STATES PATENT OFFICE.

FREDERICK H. GROOKER, OF GONIC, NEW HAMPSHIRE.

Specification forming part of Letters Patent No.

164,429, dated J une 15, 1875; application filed April 3, 1875.

To all whom it may concern.-

Be it known that I, FRED. H. CROGKER, of Gonic, in the county ofStrafford and State of New Hampshire, have invented a new and ImprovedStop-Motion for bpinning-lllachines, of which the following is aspecification:

The invention relates to the construction and arrangement of parts,hereinafter described and claimed, for throwing off the driving-belt incase the squaring-band breaks or becomes too loose, and thus preventingthe carriage being thrown off the track, and the consequences usuallyresulting therefrom.

Figure 1 is a rear elevation of the back portion of the frame,driving-pulleys, belt-shipper, and the apparatus comprising my improvedstop-motion. Fig. 2 is a horizontal section taken on the line 00 :0.

Similar letters of reference indicate corresponding parts.

A is the fast pulley, on which the drivingband is when the carriage isgoing out. B is the loose pulley, on which the driving-band is when thecarriage is going back, and (J is the loose pulley on which it is to bethrown when the squaring-band breaks. D is the shipperlever, which has aspring, E, and arm F, connected to it, so as to pull it in the directionfor keeping the band on the fast pulley A, and holding the cord G uptaut. This cord passes along the end of a lever, H, and rests in anotch, I, in it, and has a knot or ball, J, to prevent being drawnthrough the notch. Beyond the lever it passes through the pulleys K, andsuspends the weight L, which is for throwing the shipper-lever when thecord G is thrown out of the notch I in the lever by the pawl M. Thespring N swings the lever and the pawl whenever the squaring-band fails,the spring being kept extended by extensions 0 of the squaring-band,connected to the lever H by running through a stationary pul ley, It,and a pulley, Q, on the lever, so as to allow the spring to contract ifthe band breaks. The squaring-band has knots S made in it at the pulleysto hold it the same aswhen fastened to the frame in the ordinary way.

vHaving thus described my invention, I claim as new and desire to secureby Letters Patent The squaring-band, provided with the extensions O, incombination with the pulleys R Q, notched lever H, spring N, pawl M, theweighted cord G, provided with the stop J', and the shipper-lever D, allsubstantially as specified.

FREDERICK H. OROOKER. Witnesses:

WARREN G. OSBORN,

EBEN W. ADAMS.

